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103857-71-2

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103857-71-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103857-71-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,8,5 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 103857-71:
(8*1)+(7*0)+(6*3)+(5*8)+(4*5)+(3*7)+(2*7)+(1*1)=122
122 % 10 = 2
So 103857-71-2 is a valid CAS Registry Number.

103857-71-2Downstream Products

103857-71-2Relevant articles and documents

Use of the 2-Pyridinesulfonyloxy Leaving Group for the Fast Copper-Catalyzed Coupling Reaction at Secondary Alkyl Carbons with Grignard Reagents

Shinohara, Riku,Morita, Masao,Ogawa, Narihito,Kobayashi, Yuichi

supporting information, p. 3247 - 3251 (2019/05/10)

Investigation of the copper-catalyzed coupling reaction of 2-pyridinesulfonates with Grignard reagents revealed that reactions with catalytic Cu(OTf)2 were completed in 40 min. The results differed from those of the previous CuI-catalyzed reactions of tosylates in the presence of additives (LiOMe and TMEDA) for 12-24 h. It was shown that the preferred coordination of the leaving group to the reagents accelerated the reaction. Successful reagents were MeMgCl and other RMgX. Complete inversion was established.

Thiophenesulfonamides as endothelin receptor antagonists

Raju,Wu, Chengde,Kois, Adam,Verner, Erik,Okun, Ilya,Stavros, Fiona,Chan, Ming Fai

, p. 2651 - 2656 (2007/10/03)

The synthesis and in vitro binding affinities of a series of thiophenesulfonamides as ET(A) selective endothelin receptor antagonists is described. The most potent inhibitor displayed an IC50 of 43 nM and 3 μM to ET(A) and ET(B) receptors, respectively.

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